Balancing Valve

Balancing Valves TA Series 786/787/788/789 and Series 78K

08.16

insertion-type pressure or temperature probes. All valves are rated from –4°F/–20°C to +250°F/+120°C. Service will also be governed by the connecting coupling gasket ratings for grooved and flanged valves. Insulation kits are available for ½ – 6"/15 – 150 mm sizes for Series 78K and TA Series 786, 787, 788 and 789 balancing valves.

Product Description: Tour & Andersson calibrated balancing valves offer a reliable, simple and cost effective way to measure and balance all flow rates. Full throttling range is achieved by 4, 8, 12, 16, 20 or 22 full turns of the handwheel, enabling a precise setting. This high degree of accurate adjustment means that the system can be balanced precisely. The actual pressure drops in heating and cooling systems are difficult to establish by calculation because water flows vary from design flows. They can be corrected easily by regulating the desired water flow with Tour & Andersson globe style balancing valves. By measuring the pressure drop across measuring ports at a particular handwheel setting, the water flow for the valve size can be read easily from the appropriate pressure drop graph or flow balancing wheel. If the flow does not conform with that specified, adjust the valve and repeat the measuring procedure until the correct flow has been obtained. NOTE: All Tour & Andersson balancing valves include a concealed memory feature with a locking tamper-proof setting. Series 78K and TA Series 786 and 787 valves have an Ametal® body. TA Series 788 and 789 balancing valves have ductile iron bodies and Ametal or ductile iron trim, depending on size. Test ports feature self-sealing construction for

Job/Owner

Engineer

System No.

Spec Section

Location

Paragraph

Contractor

Approved

Submitted By

Date

Date

victaulic.com | Balancing Valves | TA Series | Publication 08.16 08.16 0930 Rev Q Updated 05/2014

© 2014 Victaulic Company. All rights reserved.

1

victaulic.com | Balancing Valves | TA Series | Publication 08.16 (by others) ATC Balancing Valve RETURN Coil Hose (2)

Series 78U

COIL

SUPPLY Coil Hose (1)

Supply Valve

Victaulic Series 799/79V KOIL-KIT ™ Coil Pack Note: TA Series 787 shown, other options available.

Balancing valves can be ordered individually or as a component of the Series 799, 79V, 79B, or 79A KOIL-KIT Coil Pack. See the Series 799/79V/79B/79A Contractor Order Form (A) (publication SF-33) for help ordering your Victaulic KOILKIT Coil Pack.

The Series 79B and Series 79A come standard with the components listed above, however these two packages also include the Bypass Option. When choosing a Victaulic KOIL-KIT Coil Pack with a Bypass Option, the following components are available as options: Series 78Y with Bypass Tee or Series 78T with Bypass Tee, a third coil hose, and a bypass valve. (Bypass valve options consist of Series 78Y, 78T, 78K, 786, 787).

Victaulic KOIL-KIT Coil Packs provide a simplified, quality coil installation while ensuring optimal hydronic systems design requirements are met. The Series 799/79V is suitable for a variety of hot and cold water applications including treated and untreated water systems.

The Series 79A includes the Bypass Option and the option to have the ATC valve of your choosing assembled and shipped with the Victaulic KOIL-KIT Coil Pack.

The Victaulic KOIL-KIT Coil Pack consists of the following components: Series 78Y Y-Strainer/Ball Valve or Series 78T Ball Valve Union Combination, two Coil Hoses, a Series 78U Union Port Fitting and a TA balancing valve. There are two options when ordering a Victaulic KOILKIT Coil Pack: Series 799 KOIL-KIT Coil Pack or Series 79V KOIL-KIT Coil Pack with ATC Valve.

For added convenience, when coil hoses are ordered as a component of the Series 799 or 79V KOIL-KIT Coil Pack, all hoses can be provided pre-connected to the Series 78Y or 78T on the supply side and the Series 78U on the return side (specify connection preference when ordering).

The Series 799 and Series 79V comes standard with the components listed above. Additionally, the Series 79V includes the option to have the ATC valve of your choosing assembled and shipped with the Victaulic KOIL-KIT Coil Pack. Please note that when ordering a Series 79V, Victaulic offers one balancing valve, the Series 78K. Specify either Series 799 or Series 79V when ordering.

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For information on Victaulic KOIL-KIT Coil Packs in ½ – 2"/15 – 50 mm sizes, refer to publication 08.30. For information on Victaulic KOIL-KITS for air handling units in 2 ½ – 6"/65 – 150 mm sizes, refer to publication 08.35.


2

victaulic.com | Balancing Valves | TA Series | Publication 08.16 Seat seal:

Material Specifications:

Series 78K and TA Series, 786, 787, 788, 789: EPDM

Balancing Valves

Stem seals:

Body:

EPDM

Series 78K and TA Series 786, 787: Ametal, (pressure die cast, nonporous copper alloy)

Probe seals:

TA Series 788, 789: Ductile iron, ASTM A536 Grade 6040-18 (BS Grade 400/15)

EPDM Handwheel:

Body coating:

Series 78K and TA Series 786, 787 – Red Polyamide plastic

TA Series 788, 789: 2 ½, 3, 4" – Epoxy resin coated 5 – 16" – painted

TA Series 788, 789: 2 ½ – 6" – Red Polyamide plastic

Trim: (Bonnet, Stem and Restriction Cone)

8 – 16" – Aluminum

Series 78K and TA Series 786, 787: Ametal

Optional Equipment:

TA Series 788, 789:

TA Series 786, 787: Drain kit-Ametal

Bonnet – 2 ½ – 6" – Ametal

TA Series 786, 787: Insulation Kit-Polyurethane.

Bonnet – 8 – 16" – Ductile Iron

Also available on TA Series 789 2 ½ – 6" sizes.

Stem: Ametal

Allen wrench sizes:

Restriction Cone: Ametal

3 mm memory ½ – 2" TA Series 786, 788 valves

Union:

5 mm memory 2 ½ – 12" TA Series 788 & 2 ½ – 6" TA Series 789 valves

Series 78K: Brass with EPDM o-ring

8 mm memory 8 – 16" TA Series 789 valves

Tailpiece & adapter:

5 mm drain kit ½ – 2" TA Series 786 valves

Series 78K: DZR Brass Seat: Series 78K, and TA Series 786, 787: Ametal TA Series 788, 789: Ductile Iron

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victaulic.com | Balancing Valves | TA Series | Publication 08.16 Comparison of balancing valve throttling characteristics This curve illustrates the advantage of the four (4) turn adjustment available with Tour & Andersson balancing valves (½ – 2"/15 – 50 mm). Valves 2 ½"/65 mm) and larger have 8, 12 or 16 turns. A 90° fully open to closed valve requires just a 12° change in adjustment to equal 30% change of the flow. Tour & Andersson balancing valves would require a 408° change in adjustment to equal the same 30% change in the flow.

100 90 Turn Valve

90 80 70

Tour & Anderson MULTI-TURN VALVE

% of Cv

60 50 40 30 20

Degree of Valve Stem Rotation

10 0 12

360

720

1080

408

Degree of Valve Stem Rotation

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1440

victaulic.com | Balancing Valves | TA Series | Publication 08.16 Dimensions:

A

A

Balancing Valve TA Series 786 Solder End

B

TA Series 787 Female Threaded End

TA Series 786 ½ – 2"/15 – 50 mm sizes TA Series 786 Solder End (300 psi/2065 kPa) Balancing Valve

Size Nominal Size inches mm 1/2 15 3/4 20 1 25 1 1/4 32 1 1/2 40 2 50

Actual Outside Diameter inches mm 0.840 21.3 1.050 26.7 1.315 33.7 1.660 42.4 1.900 48.3 2.375 60.3

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A End to End inches mm 3.50 89 3.81 97 4.31 110 4.88 124 5.13 130 6.13 156

B Center to Top inches mm 4.00 102 4.00 102 4.50 114 4.31 110 4.75 121 4.75 121

Approx. Weight Each Lbs. kg 1.4 0.6 1.4 0.6 1.9 0.9 2.4 1.1 3.1 1.4 4.5 2.0


5

B

TA Series 787 ½ – 2"/15 – 50 mm sizes

TA Series 787 NPT (Female) Threaded End (300 psi/2065 kPa) Balancing Valve A End to End inches mm 3.50 89 3.81 97 4.31 110 4.88 124 5.13 130 6.13 156

B Center to Top inches mm 4.00 102 4.00 102 4.50 114 4.31 110 4.75 121 4.75 121

Approx. Weight Each Lbs. kg 1.5 0.7 1.6 0.7 2.0 0.9 2.6 1.2 3.3 1.5 5.0 2.3

victaulic.com | Balancing Valves | TA Series | Publication 08.16 Valve Selection Guide: Size

Flow Data for TA Series 786 / 787 / 78K

Nominal Size inches mm 1/2 15 3/4 20

Actual Outside Diameter inches mm 0.840 21.3 1.050 26.7

Absolute Min. Flow GPM LPM 0.1 0.5 0.4 1.5

1 25 1 1/4 32 1 1/2 40 2 50

1.315 33.7 1.660 42.4 1.900 48.3 2.375 60.3

0.5 1.7 0.9 3.3 1.3 4.9 2.0 7.6

Nominal Range of Flow GPM LPM 0.6 − 2.8 2.3 − 10.6 2.0 − 6.0 7.6 − 22.7 3.9 − 10.0 14.8 − 37.9 5.0 − 15.0 18.9 − 56.8 6.6 − 20.0 25.0 − 75.7 12.6 − 36.0 47.7 − 136.0

Absolute Max. Flow GPM LPM 8.6 32.6 20.0 76.0 30.0 114.0 48.0 182.0 66.0 250.0 110.0 416.0

Important Notes: Balancing valves should be sized in accordance with the GPM/LPM flows (and not in relation to pipeline size). Sizing balancing valves based on the minimum or maximum flow rates is not recommended. Valves should be sized using the nominal flow rate only. The Minimum Flow is calculated from the minimum open setting of the valve and a minimum pressure drop 1 Ft. WG (= 3 kPa). The Nominal Flow is calculated from the maximum open setting of the valve and the minimum recommended pressure drop, 2 Ft. WG (= 6 kPa). The Maximum Flow is calculated from the maximum open setting of the valve and the maximum pressure drop, 20 Ft. WG (= 60 kPa). A computer program, TA-Select, is available for calculation of valve handwheel pre-set position and other applications. Note: For information regarding Allen Wrench sizes see the Material Specifications section on page 3.. Measuring Accuracy: The hand wheel zero position is calibrated and must not be changed. Valves have an accuracy of flow measurement of 2% to 3% when used within their recommended flow range and installed in accordance with the figure below. Note: For the most accurate results, a Series 734 TA SCOPE or Series 73M CMI should be used. However, any differential pressure meter may be used. Pump The illustration relates to the accuracy of differential pressure measurement and is not an installation requirement. 2D

5D

2D

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10 D


6

victaulic.com | Balancing Valves | TA Series | Publication 08.16 CV Values for various handle settings Series 78K and TA Series 786/787 The values below or the graph on page 16 may be used when calculating and sizing a piping system. A

B

B

Series 78K Style No. of Turns 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 2

TA Series 787

CV Values for Sizes listed below 1 1/2" 0.15 0.25 0.36 0.66 1.02 1.60 2.30 2.92

3/4" 0.59 0.88 1.38 2.20 3.24 4.49 5.51 6.61

1" 0.70 1.19 2.44 4.20 6.15 8.00 9.28 10.09

1 psi = 2.31 ft. of H 2 O

2 Full open valve.

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B

TA Series 786

1 CV = GPM at a ΔP of 1 psi/7 kPa) through the valve at any given setting.

A

A


7

1 1/4" 1.32 2.20 3.60 5.40 8.24 11.00 13.70 16.50

1 1/2" 2.03 3.83 5.34 7.08 10.20 14.60 18.60 22.30

2" 2.97 4.87 8.35 13.60 18.80 24.90 30.70 38.00

victaulic.com | Balancing Valves | TA Series | Publication 08.16 Balancing Valve

A

Series 78K Male and Female Optional tailpieces are available for double reductions, or for changing end configurations from sweat to threaded or threaded to sweat. If needed, specify tailpiece option when ordering.

B

Series 78K Typical ½ – 2"/15 – 50 mm sizes Nominal Size

Series 78K Male x Female (300 psi/ 2065 kPa) Balancing Valve

inches mm MPT Union 1/2 x 15 x x x 3/4 20

x x x

1 25

x x x x

1 1/4 32

x x x

1 1/2 40

x x

2 50

x

FPT Valve 1/2 15 ¾ 20 1 25 1¼ 32 3/4 20 1 25 1 1/2 40 1 25 1 1/4 32 1 1/2 40 2 50 1 1/4 32 1 1/2 40 2 50 1 1/2 40 2 50 2 50

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A End to End inches mm 5.75 146 5.94 151 6.27 159 7.37 187 5.99 152 6.81 173 7.66 195 7.70 186 7.83 199 7.66 195 8.91 226 8.18 208 8.21 209 8.91 226 9.00 229 9.02 229 8.86 2.25

B Center to End inches mm 4.00 102 4.00 102 4.50 114 4.72 120 4.00 102 4.50 114 4.75 121 5.30 135 4.31 109 4.75 121 4.75 121 4.72 120 4.75 121 4.75 121 4.75 121 4.75 121 4.75 121


8

Approx. Weight Each Lbs. kg 1.7 0.8 1.8 0.8 2.7 1.2 4.1 1.9 2.3 1 2.2 1.0 5.0 2.3 4.02 1.8 2.8 1.3 5.2 2.4 7.3 3.3 5.52 2.5 3.6 1.6 7.5 3.4 7.16 3.2 5.3 2.4 7.19 3.3


A

A

TA Series 788 Flanged End (Class 150 RF, ASME/ANSI B16.42)

D

TA Series 789 Grooved End

B

B

TA Series 788 Typical 2½ – 16"/65 – 400 mm sizes

Size


TA Series 788 Flanged End (250 psi/1720 kPa) Balancing Valve

TA Series 789 Grooved End (350 psi/2400 kPa) Balancing Valve

Nominal Size inches mm 2 1/2 65 3 80


A End to End inches mm 11.38 289 12.25 311

B Center to Top inches mm 8.00 203 8.63 219

Approx. Weight Each Lbs. kg 24.0 10.9 31.0 14.1

A End to End inches mm 11.38 289 12.25 311

B Center to Top inches mm 8.00 203 8.63 219

Approx. Weight Each Lbs. kg 14.0 6.4 20.0 9.1

4 100 5 125 6 150 8 200 10 250 12 300 14 350 16 400

4.500 114.3 5.563 141.3 6.625 168.3 8.625 219.1 10.750 273.0 12.750 323.9 14.00 355.6 16.00 406.4

13.75 350 15.75 400 18.88 480 23.63 600 28.75 730 33.50 851 38.60 980 43.30 1100

9.44 240 10.88 276 11.25 286 17.00 432 17.75 451 19.00 483 23.00 584 25.20 640

43.0 19.6 62.0 28.5 82.0 37.5 168.0 76.5 270.0 122.9 360.0 163.9 655 297 895 406

13.75 350 15.75 400 18.88 480 23.63 600 28.75 730 33.50 851

9.44 240 10.88 276 11.25 286 17.00 432 17.75 451 19.00 483

31.0 14.1 50.0 22.7 69.0 31.3 140.0 63.7 202.0 91.9 280.0 127.4

–

–

–

–

–

–

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9


A

A

TA Series 788 Flanged End (Class 150 RF, ASME/ANSI B16.42)

D

TA Series 789 Grooved End

B

B


Valve Selection Guide: Size


Flow Data for TA Series 788 & 789

Nominal Size inches mm 2 1/2 65 3 80


Absolute Min. Flow GPM LPM 1.4 5.3 1.5 5.7

4 100 5 125 6 150 8 200 10 250 12 300 14 3 350 16 3 400

4.500 114.3 5.563 141.3 6.625 168.3 8.625 219.1 10.750 273.0 12.750 323.9 14.00 355.6 16.00 406.4

1.9 7.2 4.2 15.9 5.0 18.9 30.0 113.6 70.0 265.0 115.0 435.3 83.0 314.0 95.0 360.0

Nominal Range of Flow GPM LPM 38.0 − 100.0 144.0 − 379.0 31.0 − 130.0 117.0 − 493.0 68.0 − 200.0 257.0 − 757.0 90.0 − 320.0 341.0 − 1211.0 182.0 − 450.0 689.0 − 1703.0 367.0 − 820.0 1389.0 − 3104.0 540.0 − 1300.0 2044.0 − 4921.0 960.0 − 1500.0 3634.0 − 5678.0 1020.0 − 2700.0 3861.0 − 10220.0 1330.0 − 3400.0 5034.0 − 12869.0

Absolute Max. Flow GPM LPM 290.0 1097.7 410.0 1551.9 650.0 2460.3 1020.0 3860.7 1430.0 5412.6 2600.0 9841.0 4040.0 15291.4 4950.0 18735.8 7414.0 28062.0 9371.0 35469.0

3 Only the TA Series 788 Flanged End Balancing Valves is available in 14-16" / 350-400mm sizes Important Notes (See page 5 for Balancing Accuracy): Balancing valves should be sized in accordance with the GPM/LPM flows (and not in relation to pipeline size). Sizing balancing valves based on the minimum or maximum flow rates is not recommended. Valves should be sized using the nominal flow rate only. The Minimum Flow is calculated from the minimum open setting of the valve and a minimum pressure drop 1 Ft. WG (= 3 kPa). The Nominal Flow is calculated from the maximum open setting of the valve and the minimum recommended pressure drop, 2 Ft. WG (= 6 kPa). The Maximum Flow is calculated from the maximum open setting of the valve and the maximum pressure drop, 20 Ft. WG (= 60 kPa).A computer program, TA-Select, is available for calculation of valve handwheel pre-set position and other applications. Note: For information regarding Allen Wrench sizes see the Material Specifications section on page 3. Note: For the most accurate results, a Series 734 TA SCOPE or Series 73M CMI should be used. However, any differential pressure meter may be used.

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victaulic.com | Balancing Valves | TA Series | Publication 08.16

TA SCOPE TA Series 734 The TA Series 734 SCOPE is a wireless, handheld device for the swift and accurate measurement of differential pressure, flow, temperature and power.

Link Differential Pressure Sensor TA Series 736

An independent sensor communicates with the TA SCOPE to deliver data quickly, thereby enabling contractors to balance a system, troubleshoot hydronic problems and log system performance.

Provides connection between a building’s heating and cooling and building’s monitoring system (BMS). Continuously measures the flow and differential pressure through and across the Tour & Andersson balancing valves.

The TA Series 734 SCOPE Premium is a more robust case compared to the TA Series 734 SCOPE. See page 12 of this publication for additional details on the TA SCOPE and TA SCOPE Premium.

Measurement probes provided for direct connection to the measurement points on all TA Series 786, 787, 788, and 789 balancing valves.

Differential pressure: • TA SCOPE: 0-29 psi / 0-200 kPa • TA SCOPE (High Pressure): 0-145 psi / 0-1000 kPa

TA Select Computer Program TA Select helps you choose the right balancing valve, taking the desired flow rate and pressure drop into consideration. The software will advise the correct combination of valve, handwheel position and pipe size to correctly balance the system. A sophisticated viscosity correction procedure displays the density, viscosity, specific heat and freezing point of fluids such as glycols and brines. It also displays the true value of flow through each valve. The program will also size the pipe, generate Cv values for the ATC valves and give pre-set information for all TA valves on the project.

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victaulic.com | Balancing Valves | TA Series | Publication 08.16 TA Series 734 SCOPE Premium / SCOPE TA SCOPE Premium case is a robust partitioned case that includes: • Combined safety pressure and temperature probe allowing automatic correction for fluid temperatures and easier power measurements • A large set of accessories • Extra space for a second (optional) differential pressure sensor and tools. The TA SCOPE contains a reduced set of accessories compared to the TA SCOPE Premium. All * marked parts are included in both the TA SCOPE Premium and TA SCOPE kits. 1. *Handheld unit (Hh) 2. *Dp Sensor unit (DpS) 3. *Digital Temperature Sensor (DTS) 4. *Measuring hoses, 20 in. red/blue 5. Safety pressure and temperature probe (SPTP) 6. Safety pressure probes (SPP) 7. Measuring hoses with twin needle, 5.9 in 8. Flashlight 9. Mirror 10. Chucks for older valves, red/blue 11. *Allen Keys 3mm/5mm 12. Spanner for measuring points on older valves 13. *Presetting tool TA Series TC/TCM/TCP 14. *Spare filters (4 pcs) 15. Chain for mounting 16. Neckstrap 17. *USB-cables for connection: Hh - DpS and Hh - PC 18. *Multi-charger for handheld, Dp sensor(s) and TA-SCOPE Relays 19. *DC cable (2 PCS) 20. *AC cable (EU, UK, US or AU.NZ) 21. Cable wrapping 22. *Case 23. TA-Select Software 24. User manual 25. *Calibration certificates for DpS, DTS, and SPTP 26. *Quick Guide 27. SPTP/SPP instruction 28. SPTP/SPP stickers NOTE: * Denotes this part is available in the SCOPE as well as the SCOPE Premium.

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victaulic.com | Balancing Valves | TA Series | Publication 08.16 Accessories • A separate drain kit with a ¾"/20 mm connection is available for Series 786 and Series 787 valves

Drain Kit Series 786-DK

• Kit must be field mounted • Kit comes complete with 2 gaskets and a hexnut. • Partcode= K-000-786-CBV

D

Probe Port

L

Style

Size

786/787

inches mm 1/2 – 2 15 – 50 2 1/2 – 16 65 – 400

K-000-740-003

2 1/2 – 16 65 – 400

K-000-740-001

788/789 L

788/789

Part Code

K-000-740-002

L inches mm 1.75 45 1.19 30 3.50 89

TA Series 786/787/788/789 TA Series 788/789

Universal Gauge Meter Conversion Kit

• This kit includes 2 probes, necessary fittings, flow wheel and instruction sheet. • Partcode= K-000-738-100

Handwheels Digital Read out

0

Lock Feature/ Memory Stop

Digital Read out

0

Part Code

Part Code

P-004-784-001

P-024-784-001

P-080-784-001

0

0

STAD

Lock Feature/ Memory Stop

Part Code

STAD

2½

Valve Type and Size

TA Series 786/787 Plastic ½ – 2"

2½

Valve Type and Size

TA Series 788/789 Plastic 2 ½ – 6"

TA Series 788/789 Aluminum 8 – 16"

Balancing Wheel

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By using the balancing wheel it is easy to determine the relationship between flow, pressure drop and the handwheel setting values for all valve sizes. Order the balancing wheel from your nearest Victaulic representative.


13

victaulic.com | Balancing Valves | TA Series | Publication 08.16 Prefab Insulation TA Series 786 & TA Series 787

H

D B

Valve Size inches mm 1/2 & 3/4 15 & 20 1 25 1 1/4 32 1 1/2 40 2 50

L

Dimensions Inches/mm Part Code K-004-784-INS K-010-784-INS K-012-784-INS K-014-784-INS K-020-784-INS

H 5.31 135 5.59 142

D 3.54 90 3.70 94

B 4.06 103 4.06 103

L 5.51 140 6.30 160

6.14 156 6.65 169 7.01 178

4.17 106 4.25 108 4.25 108

4.06 103 4.45 113 4.49 114

7.09 180 8.43 214 9.65 245

Prefab Insulation TA Series 788 & TA Series 789 L

D

C Min.

Valve Size inches mm 2 1/2 65 3 80 4 100 5 125 6 150

Dimensions Inches/mm Part Code K-024-784-INS K-030-784-INS K-040-784-INS K-050-784-INS K-060-784-INS

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H 17.75 451 19.00 483

D 10.63 270 11.44 291

B 10.63 270 11.44 291

20.50 521 22.50 572 26.00 660

12.63 321 13.75 349 15.00 381

12.63 321 13.75 349 15.00 381


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victaulic.com | Balancing Valves | TA Series | Publication 08.16 Correction Factors: For liquids other than water, the flow values from the balancing wheel can be adjusted as follows: Divide the flow rate (as indicated by the balancing wheel) by the square root of the specific gravity.

Actual Flow =

qCBI SG

This applies to liquids having, on the whole, the same viscosity as water, i.e. most water/glycol mixtures and water/brine solutions at room temperature. At low temperatures, the viscosity increases and laminar flow may occur in certain valves. The risk increases with small valves, low settings and low differential pressures. A computer program (TA-Select) is available for calculation of pre-setting values and other applications. When the flow setting is verified or changed to the final setting, the memory stop should be set. Contact Victaulic for further information. Correction Factors: When Δp and the design flow rate are known, use the formula shown to calculate the CV value or use the graphs on page 17 – 19. The Tour & Andersson balancing wheel can also be used.

A computer program, TA-Select, is available from Victaulic for calculation of pre-setting values and other applications.

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victaulic.com | Balancing Valves | TA Series | Publication 08.16 CV Values for various handle settings

A

A

TA Series 788/789

D

The values below or the graph on page 17 and 18 may be used when calculating and sizing a piping system.

B

B

TA Series 788 Style No. of Turns 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00 6.50 7.00 7.50 8.00 9.00 10.00 11.00 12.00 13.00 14.00 15.00 16.00 17.00 18.00 19.00 20.00 21.00 22.00

CV Values for Sizes listed below 4 2 1/2" 2.09 3.94 5.68 7.54 10.80 18.90 29.70 40.90 51.60 60.30 70.20 78.90 84.70 89.30 93.40 98.60 6 — — — — — — — — — — — — — —

3" 2.32 4.64 6.96 9.28 12.80 16.20 22.60 33.60 47.60 63.80 78.90 92.80 107.00 119.00 131.00 139.00 6 — — — — — — — — — — — — — —

4" 2.90 6.96 10.40 13.30 18.60 30.20 51.00 73.10 92.80 114.00 133.00 153.00 168.00 184.00 203.00 220.00 6 — — — — — — — — — — — — — —

5" 6.38 12.20 18.00 24.90 31.30 41.80 63.80 96.30 132.00 164.00 194.00 229.00 255.00 289.00 320.00 348.00 6 — — — — — — — — — — — — — —

6" 7.54 13.90 25.50 46.40 75.40 116.00 157.00 196.00 240.00 281.00 324.00 362.00 394.00 426.00 454.00 487.00 6 — — — — — — — — — — — — — —

8" — — — 46.40 58.00 75.40 104.00 139.00 191.00 261.00 331.00 394.00 464.00 505.00 545.00 597.00 690.00 754.00 824.00 887.00 6 — — — — — — — — — —

4 CV = GPM at a ΔP of 1 psi/7 kPa) through the valve at any given setting.

1 psi = 2.31 ft. of H 2 O

5 Only the TA Series 788 Flanged End Balancing Valve is available in 14-16" / 350-400mm sizes. 6 Full open valve.

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TA Series 789


16

10" — — — 104.00 128.00 162.00 226.00 296.00 371.00 447.00 516.00 580.00 632.00 684.00 766.00 841.00 951.00 1090.00 1218.00 1375.00 6 — — — — — — — — — —

12" — — — — — 174.00 267.00 348.00 429.00 522.00 621.00 719.00 800.00 870.00 945.00 1032.00 1125.00 1206.00 1299.00 1392.00 1531.00 1589.00 1624.00 1682.00 6 — — — — — —

14" 5 — — — — — 124.90 147.80 169.60 194.80 237.10 291.00 346.00 403.30 462.80 539.60 637.00 898.10 1096.40 1260.20 1443.50 1626.80 1844.50 2016.30 2142.30 2245.40 2337.10 2440.20 2520.40 6 — —

16" 5 — — — — — 143.20 169.60 195.50 238.30 302.40 373.50 442.20 514.40 590.00 675.90 779.00 1024.20 1306.00 1432.00 1603.90 1787.20 1981.90 2222.50 2451.60 2612.00 2760.90 2898.40 3013.00 3104.60 3184.80 6

victaulic.com | Balancing Valves | TA Series | Publication 08.16 Diagram

Example:

TA Series 786/787 and Series 78K

Wanted: Pre-setting for a 1" valve at a desired flow rate of 6.7 GPM and a pressure drop of 3 ft.

This graph shows the pressure drop across the pressure test points of the valve.

Solution: Draw straight line joining 6.7 GPM and 3 ft. This gives CV = 5.9. Now draw a horizontal line from CV = 5.9. This intersects the bar for a 1" valve at the desired pre-setting of 2.35 turns.

A straight line connecting the bars for flow rate, CV and pressure drop shows the relationship between these variables. The position for each valve size is arrived at by drawing a horizontal line from the CV value obtained.

Note: If the flow rate falls outside of the scale in the diagram, the reading can be made as follows: Starting with the example above, we get 3 ft., CV = 5.9 and the flow rate 6.7 GPM. At 3 ft. and CV = .59 we get the flow rate .67 GPM. That is, for a given pressure drop, it is possible to read 10 times or 0.1 times the flow and CV values. 1

100 2.5

40

100 70

3.5

2

3

70

2 4

30

20

30

25

25

20

4

20 15

10 7

0.3

4

5 5

3

3

2.5

2.5

0.2

1 0.75

1.5

1.5

1 0.7

0.4

0.5

0.4

0.4

2

1.5

1

3 1.5

1 0.5

1.5

1

10

4

0.5

5

0.5 1

2.5 1

0.3

10

0.5

2

0.25

30*)

0.5

40

0.25 1.5

50

0.25

0.25

0.2

0.2 0.5

1.5

2

1.5

0.35

0.3

0.3

5

3

0.35

0.5

0.05

2

0.3

0.7

0.1

1

4

0.5

0.4

1

2

2.5

2.5

0.5

2

2

3

4

2 2

1 0.75

4

4

3

2

2.5

2.5

3

7

5

3

4

10 0.5

1

4 3

10

3 2.5

15

0.4

0.5

40

40

1

Setting, number of turns

50 50

20

1

**)

0.15

0.15

0.5

30

*25 db (A) **35 db (A)

0.1

100

0.1 Size l/s

GPM

Cv

½"

Kv

¾"

1"

1¼"

1½"

TA Series 786/787 and Series 78K

08.16 0930 Rev Q Updated 05/2014

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17

2"

ft.

kPa

victaulic.com | Balancing Valves | TA Series | Publication 08.16 Diagram

Example:

TA Series 788/789 Sizes 2½ – 6"/60 – 150 mm

Wanted: Pre-setting for a TA Series 788 or TA Series 789 2 ½" at a desired flow rate of 47 GPM and a pressure drop of 2 ft. WG.

This graph shows the pressure drop across the pressure test points of the valve.

Solution: Draw straight line joining 47 GPM and 2 ft. WG. This gives CV = 50. Now draw a horizontal line from CV = 50. This intersects the flow rate scale for Series 788 2 ½" at the desired pre-setting of 4.5 turns.

A straight line connecting the flow rate scale, CV and pressure drop shows the relationship between these variables.

1

1000 400

1000

350 300

700 20

700


500

8**) 7 6

400

400 300

200

8**) 7

300 150

10

200

100

7

100 5 4

70

8**) 7 6

6

5

5

2

2 4

20

5 3*) 1

2

1

10 10 2

7

1

4

10

0.5

5 1

4

10

7

15

2 0.4

5 GPM (US)

20

1.5

l/s

08.16 0930 Rev Q Updated 05/2014

30

1 Cv

Kv

2½"

Valve factor

3"

4"* TA Series 788/789


18

5"*

6"*

****)

25

*Recommended area **25 db (A) ***35 db (A)

1.5

Flow

victaulic.com

0.5

0.5

2

0.3

50

0.5

3

7

30***)

40

1 3

0.5

20

2 7

5

4

3*)

15

1

10

2

20

15 20

3

3*)

30 2

5

4

3*)

30

35

15

3*)

5

4

3

3

4

4

70 50

5

50

40

30

1 4

6

8**)

100 70

5

7

150 150

2

6

8**)

200

50 45

0.5

500

Ft.WG

100 kPa

Pressure drop

victaulic.com | Balancing Valves | TA Series | Publication 08.16 Diagram TA Series 788/789 Sizes 8 – 16"/200 – 400 mm 10000

278

4000 3500

200

3000

1 10000

7000 7000


5000 4000

0.5

5000 2

4000 2000

3000 2500

100

1500

3000

2000 1500 1500 1000

1000 1000

50 700 40

30

400 350 20

700 700 500

500 450

400

12 *) 11 10 9 8 7

500

12 *) 11 10 9 8

8

10

7

9 *)

7 6

6

7

200

3

3

2

7 6

3

4 4 3

100

5

7

2 3

70

10

3

4 *)

100

150

5

9

5

200

70

4

4

5

150

3

5

200 300

1

6

4 *)

300

14 13 12 11 10 *)

8 8

5 *)

4

300 250

6

5

150

10

16 *) 14 12 10

20 *) 18 16 14 13 12 11

2000

22 *) 20 18 16

10

20

30*)

50 40 100 30 25

5 70

2

40 15

30

20

20 ** 25 db (A)

15

GPM (US) Flow

l/s

30

10 Kv

Cv DN

8” 200

10” 250

Valve factor

12” 300 Series 788/789

7

14” 350

16” 400

7

Ft.WG

victaulic.com


19

100 kPa

Pressure drop

7 Only the TA Series 788 Flanged End Balancing Valve is available in 14-16" / 350-400mm sizes.

08.16 0930 Rev Q Updated 05/2014

**)

25

*** 35 db (A)

15

50

50

* Recommended area

20

4

3

50 40

victaulic.com | Balancing Valves | TA Series | Publication 08.16 Typical Specifications:

These valves shall have eight (8), twelve (12), sixteen (16) or twenty-two (22) 360° adjustment turns of the handwheel for precise setting with hidden memory feature to program the valve with precision tamper-proof balancing setting. Handwheel shall have digital readout. The handwheel can be installed in any position without affecting performance.

SERIES 78K – (½ – 2" M x F) TA SERIES 786 STAS – (½ – 2" SOLDER WITH DIGITAL HAND WHEEL) TA SERIES 787 STAD – (½ – 2" NPT)

TA Balancing Valves ½" through 2":

Furnish and install, as shown on the job plans, TA Series 786/787 Balancing Valves with provision for connecting a portable differential (Ft. of Head) pressure meter. Each meter shall have pressure/temperature probes.

300 psi/2065 kPa, y-pattern, globe type with soldered or threaded ends, non-ferrous Ametal® brass copper alloy body, EPDM o-ring seals. 4-turn digital readout handwheel for balancing, hidden memory feature with locking tamper-proof setting, and connections for portable differential meter. TA Series 786 STAS or 787 STAD.

The balancing valves shall be Y-pattern globe style design and all metal parts of nonferrous, pressure die cast, nonporous Ametal. Each valve shall provide four (4) functions:

TA Balancing Valves 2 ½" through 16":

(1) Precise flow measurement, (2) Precision flow balancing, (3) Positive shut-off with no drip seat, eliminating the need of an additional isolation valve, (4) Drain connection using 3/4 " NPT hose end thread.

250 psi / 1725 kPa (TA Series 788) 350 psi / 2400 kPa (TA Series 789), y-pattern, globe type with flanged or grooved ends, ASTM A536 ductile iron body, all other metal parts of Ametal® brass copper alloy, EPDM O-ring seals. 8, 12, 16, 20 or 22 turn digital readout handwheel for balancing, hidden memory feature with locking tamper-proof setting, and connections for portable differential meter. TA Series 788 STAF or 789 STAG.

These valves shall have four (4) 360° adjustment turns of the handwheel for precise setting with hidden memory to provide a tamper-proof balancing setting. Handwheel shall have digital readout. The handwheel can be installed in any position without affecting performance.

Purchased TA CBI-II or TA CMI balancing instruments are to be left with the project owner upon completion of the project.

TA SERIES 788 STAF – (2 ½ – 12" FLANGED WITH DIGITAL HAND WHEEL)

Balancing Meter:

TA SERIES 789 STAG – (2 ½ – 12" GROOVED WITH DIGITAL HAND WHEEL)

If a balancing meter is required to be left with the owner after commissioning, the balancing meter shall be from the same provider as the balancing valves, Victaulic/Tour and Andersson. The Series 734 TA-Scope, or TA Series 73M CMI Pressure Differential Meter are acceptable and are manufactured by Tour and Andersson. Needle gauge type meters will not be allowed.

Furnish and install, as shown on the job plans, TA Series 788/789 Balancing valves with provision for connecting a portable differential (Ft. of Head) pressure meter. Each meter connection shall have pressure/temperature probes. The balancing valves shall be Y-pattern globe style design with ductile iron body all other wetted parts of nonferrous, pressure die cast Ametal. Each valve shall provide three (3) functions:

INSULATION: For insulation against heat loss or condensation. Preformed rigid polyurethane insulation is available for ½ – 2" TA Series 786/787 valves and for 2 ½ – 6" TA Series 788/789 valves.

(1) Precision flow measurement, (2) Precision flow balancing, (3) Shut-off feature, eliminating the need of an additional isolation valve.

Installation Reference should always be made to the current TA Hydronics installation/assembly instructions for the product you are installing. For coupling and strainer installation, reference should always be made to the I-100 Victaulic Field Installation Handbook for the product you are installing. Handbooks are included with each shipment of Victaulic products for complete installation and assembly data, and are available in PDF format on our website at www.victaulic.com

Note This product shall be manufactured by Victaulic or to Victaulic specifications. Victaulic recommends all products to be installed in accordance with current TA Hydronics installation/assembly instructions. Victaulic and TA Hydronics reserve the right to change product specifications, designs and standard equipment without notice and without incurring obligations. Trademarks Victaulic ® is a registered trademark of Victaulic Company.

Warranty Refer to the Warranty section of the current Price List or contact Victaulic for details.

08.16 0930 Rev Q Updated 05/2014

victaulic.com


20

Balancing Valve

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